Document current conditions consensus selection

docs/api.md

@@ -162,8 +162,10 @@ GET /observations?units=us&precision=1
 GET /conditions/current
 ```
 
-Returns current conditions aggregated from recent `observations` rows. The
-implemented observation window is 30 minutes.
+Returns current conditions from recent `observations` rows. Numeric fields are
+aggregated over the implemented 30-minute observation window. `conditionCode`
+is selected from the latest observation per source in that window by
+source-balanced WMO family consensus.
 
 Query parameters: `format`, `units`, `precision`.
 
@@ -171,6 +173,7 @@ Common `data` fields:
 
 | Field | Type | Notes |
 | --- | --- | --- |
+| `conditionCode` | integer | WMO weather code selected by source-balanced family consensus |
 | `conditionText` | string | optional text derived from WMO code and day/night flag |
 | `isDay` | boolean | optional |
 | `relativeHumidityPercent` | number | optional |

docs/integrations/weatherfeeder-postgres.md

@@ -57,8 +57,10 @@ Latest parent resources use these ordering rules:
   story_order ASC, story_index ASC`.
 - convective outlook runs: `as_of DESC, event_emitted_at DESC`.
 
-Current conditions aggregate `observations` rows where `observed_at` is inside
-the application-provided observation window.
+Current conditions aggregate numeric values from `observations` rows where
+`observed_at` is inside the application-provided observation window. They also
+use the latest row per `event_source` in that window to select `condition_code`
+by source-balanced WMO family consensus.
 
 ## Child Ordering
 
@@ -79,15 +81,16 @@ The repository reads only these columns.
 
 ### `observations`
 
-`event_id`, `station_id`, `station_name`, `observed_at`, `condition_code`,
-`is_day`, `text_description`, `temperature_c`, `dewpoint_c`,
+`event_id`, `event_source`, `station_id`, `station_name`, `observed_at`,
+`condition_code`, `is_day`, `text_description`, `temperature_c`, `dewpoint_c`,
 `wind_direction_degrees`, `wind_speed_kmh`, `wind_gust_kmh`,
 `barometric_pressure_pa`, `visibility_meters`, `relative_humidity_percent`,
 `apparent_temperature_c`, and `event_emitted_at`.
 
-Current conditions additionally aggregate recent `observations` values for
+Current conditions additionally read recent `observations` values for
 temperature, apparent temperature, dewpoint, humidity, wind speed, wind
-direction, condition code, and latest `is_day`.
+direction, latest `is_day`, and latest condition-code candidates per
+`event_source`.
 
 ### `observation_present_weather`
 

docs/internal/postgres-repository.md

@@ -76,8 +76,9 @@ successful responses with `data: null`.
 
 - `LatestObservation`: latest row from `observations`, then present-weather
   rows from `observation_present_weather`.
-- `CurrentConditions`: aggregates recent rows from `observations` using the
-  application-provided observation window.
+- `CurrentConditions`: reads an aggregate row from recent `observations` using
+  the application-provided observation window, then reads the latest
+  condition-code candidate per `event_source` in the same window.
 - `LatestAlertRun`: latest row from `alert_runs`, then child `alerts` and
   `alert_references`. This is the latest stored alert snapshot. The repository
   maps both `ends` and `expires`; active-time filtering is performed by the